I think we do have an interest in combating states that try to cross borders and steal parts of other people's country.

In the 2000 election, George W. Bush, who had shirked military service, succeeded in presenting himself as more reliable on national security than Al Gore.

We have an interest in combating tactics in war that are abhorrent and that only fuel terrorism because they incite people on the ground.

I think the point that we all agree upon is that we have to engage with Russia.

No more than a surgeon can operate while tweeting can you reach your potential with one ear in, one ear out. You actually have to reacquaint yourself with concentration. We all do.

There is a convergence of crises that makes it challenging to keep the world's attention.

Democracies are expense-averse and they think in terms of short-term, political interests rather than a long-term interest in stability.